1994 Chevrolet Astro Owner's Manual - Page 200
1994 Chevrolet Astro Manual
Page 200 highlights
1. You can remove the radiator pressure cap when the cooling system, including the radiator pressure and upper radiator hose,is no longer cap hot. Turn the pressure cap slowly to the left until it first stops. (Don't press down while turning the pressure cap.) If you hear a hiss, waitfor that to stop. A hiss means there is still some pressure left. 2. Then keep turning the pressure cap, but now push down as you turn it. Remove the pressure cap. 3. Fill the Radiator with the proper mix, up to the base of the filler neck. I 5-16
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 |
 |
1
.
You can
remove
the
radiator
pressure cap when the
cooling
system,
including
the
radiator
pressure
cap and
upper
radiator
hose,
is no
longer
hot. Turn
the
pressure cap slowly to the
left
until
it
first
stops.
(Don't
press
down
while
turning
the
pressure
cap.)
If
you
hear
a
hiss,
wait for that
to
stop.
A
hiss
means
there
is
still
some
pressure
left.
2.
Then keep
turning
the
I
pressure cap, but
now
push
down
as
you
turn
it.
Remove
the
pressure cap.
3.
Fill
the
Radiator
with
the
proper
mix,
up to the
base
of
the filler
neck.
5-16